
body, h1, h2, h3, h4, h5, h6, hr, p, blockquote,
dl, dt, dd, ul, ol, li,
pre,
fieldset, lengend, button, input, textarea,
th, td {
    margin: 0;
    padding: 0;
}

.w100 {
    width: 100%;
}

.h100 {
    height: 100%;
}
.flex{
    display: flex;
}
